Safety attachment for valve structures



WITNESS:

Sept. 28 1926,

SAFETYATTACHMENT FOR VALVE STRUCTURES Filed May 26, 1926 Joseph A. Haller INVENTOF A'I'TOR N EY Patented Sept. 28, 1925.

JOSEPH A. HALLER, OF PHILADELPHIA, PENNSYLVANIA.

SAFETY ATTACHMENT FOR VALVE STRUCTURES.

Application filed May 28, 1926. Serial No. 111,805.

This invention relates to safety attachments for valve structures. and more particularly to an improvement over my invention, as disclosed in my U. S. Patent #1,554,086, issued September 15th, 1925 The principal object of the improved safety attachment is to provide a simple, readily released and more efficient attachment for application to the valve structures of. gas ranges or analogous valve structures where by the valves will be protected against accidental opening, and automatically locked by the normalclosing action of a valve.

Another object of the invention is the provision of a safety attachment for a valve structure, which is particularly adapted to be clamped to a rotatable valve plug, accurately located thereon by co-operative engagement with the stop pin usually awociated with such a valve structure and which may be secured thereon without the drilling of holes therein or otherwise altering the valve structures.

Another object of the invention is the provision of an improved safety attachment for valve structure as specified, which is more readily and effectively operated by the application of a natural Y gripping movement of the hand on the closure handle for the valve, simultaneously with the pressure of the index finger of the same hand on the,

reieasing trigger carried by the attachment so that the valve may be opened with the same natural movement of the operators hand as though the attachment were not associated with the valve structure.

ther objects of the invention will appear in the following detail description and in the accompanying drawing, wherein:

Figure 1 is a rear View in elevation of a valve structure with the attachment applied thereto. 7

Figure 2 is a side elevational view of the valve structure showing the improved attachment applied thereto, with the dotted lines indicating the released position of the trigger pivotally carried by the attachment.

Figure 3 is a top plan view of the improved attachment'as applied 'to a valve structure with the valve plug therefor in section.

Figure 4 is a) view in elevation of the safety attachment per se partly in section, to illustrate the spring influenced trigger action.

Referring more particularly to the drawand a valve shell 12.

ing, the improved safety attachment for gas valves 1s shown as applied to the rotatable valve plug 10 associated with a valve structure having an operating handle 11 The safety attachment 13 lSOOIlStILlCtQCl. of sheet metal and consists of a blanked out body or band portion 14 having laterally extending ends 15 provided with openings 16 therein for receiving a suitable clamping screw bolt 17.

band, the recess being disposed at substantially 90 with respect to he depending ear l8 and said recess being adapted to receive a spring influenced trigger 22. The trigger 22 is pivotally mounted between the walls of the recess upon a pin 23 with the lower end of the trigger extending downward and abutting against a shoulder 24 formed on the valve shell 12, when the valve plug 10 is in a closed position.

A suitable clearance notch is provided in the upper edge of the outer wall of the recess 21 to permit the head 25' of the trigger 22 to extend outward under the influence of a spring 26. This action yieldingly holds the lower end of the trigger within the recess R of the valve shell and holds the valve against opening movement. In order to release and open the. valve, the handle 11 of the valve is grasped in the usual manner and the index. finger is placed upon the trigger head 25. Pressure applied to the trigger head 25 by the finger will rock the trigger on the pivot against the action of the spring carried thereby and swing the lower end of the. trigger outwardly and out of the path of the shoulder 24 to permit the rotation of the valve plug 11 until the stop pin 20 reaches and abuts the shoulder 24. In this positionthe valve is open.

Now, in order to close the valve, the operating handle 11 is returned in the usual manner, whereupon the trigger. end will automatically snap back into its normal shoulder abutting position when the shoulder 24 has been reached by the rotation of the enlllt) tire attachment with the valve plug 10. In this connection, it is to be noted, that the depending ear 18 which carries the stop .pin 20, insures the rotation of the attachment with the valve plug 11 at all times, and also prevents the rotation of the valve plug 11 when the trigger 22 has not been released from its normal shoulder abutting position.

From the foregoing description when taken in connection with the accompanying drawing, it will be readily observed that I have provided a simple, safe, and efficient attachment for gas valve structures, which is readily attachable and embodies particular mechanical features of operation whereby the releasing mechanism is not visible to children when attempting to open a valve so equipped.

While I have shown and described one practical embodiment of my invention, it is to be understood, that the same may be constructed in various other manners, and applied to a wide variety of valves-for purposes other than herein shown and described, and therefore I do not desire to be limited in any manner, except as set forth inthe claims hereunto appended.

What I claim is 1. In combination with a valve structure including a rotatable valve plug, a stop pin carried by said plug and a shoulder for limiting rotation of said plug, of an encircling body, means for clamping said body to said valve plug, depending means integrally formed on said body to engage the stop pin to secure said body against rotation on said valve plug, and trigger means pivotally carried by said body for normally abutting said shoulder to lock said valve plug against rotation when in a closed position.

2. In combination with a valve structure including a rotatable valve plug, a stop pin carried by said plug and a shoulder for limiting rotation of said plug, of an encircling body, means for clamping said body to said valve. plug, an apertured depending ear formed integrally with said body to receive the stop pin to hold said body portion against independent rotation, and spring 111- fiuen'ced trigger means pivotally carried by said body for normally engaging said shoulder to prevent rotation of said valve plug.

3. In combination with a valve structure including a rotatable valve plug, a stop pin arried by said plug and a shoulder for lhn iting rotation oi said plug, of an encircling body, means for clamping said body to said. valve plug above and adjacent to said stop pin, an apertured depending ear provided on said body portion for attachment to said stop pin for rigidly securing said body to said valve plug, and spring influenced trig 'ger means pivotally carried by said body and disposed at substantially a right angle from said depending ear for normally engaging said shoulder to lock said valve plug against rotation when in closed position.

4:. In combination with a valve structure including a rotatable valve plug, a stop pin carried by said plug and a shoulder for limiting rotation of said plug, of an encircling body, means for clamping said body to said valve plug above and adjacent to said stop pin, an apertured depending ear provided on said body for attachmentto said step pin for rigidly securing said body on said valve plug, spring influenced trigger means pivotally carried by said body and disposed at substantially a right angle from said depending ear for normally engaging said. shoulder to lock said valve plug against rotation when in closed position, and finger engaging means included in said trigger to release the valve plug.

In testimony whereof I ailix my signature.

JOSEPH a. nALLnn. 

